import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
import Welcome from '../components/Welcome.vue'
import Users from '../components/user/Users.vue'
// import { from } from 'core-js/fn/array'

Vue.use(VueRouter)

const router = new VueRouter({
  routes: [
    { path: '/', redirect: '/login' },
    { path: '/login', component: Login },
    { path: '/Home', component: Home, redirect: '/welcome', children: [{ path: '/welcome', component: Welcome }, { path: '/users', component: Users }] }
  ]
})

// 为路由对象，添加 beforeEach 导航守卫
router.beforeEach((to, from, next) => {
  // 如果用户访问的登录页，直接放行
  if (to.path === '/login') return next()
  // 从 sessionStorage 中获取到 保存的 token 值
  const tokenStr = window.sessionStorage.getItem('token')
  // 没有 token ,强制跳转到登录页
  if (!tokenStr) return next('/login')
  next()
})

export default router
